Good evening all,
This evening I was browsing a nearby used book store and spotted a used altar missal sitting on the self.
The missal itself is red in color measuring approximately 7x11. The prayers for the Mass are printed in Latin, while the readings and the ordinary are printed in English. For those prayers in Latin, there is no side-by-side English translation. Additionally, all rubrics are printed in Latin.
I would assume that this is an interim missal as the Imprimatur was given by Cardinal Francis Spellmen, Archbishop of New York, on September 21, 1964.